Doorlock



Aug. 27, 1935. R RlEBACK 2,012,693

pooRLocK Filed June 17, 1935 2 Sheets-Sheet 1 Aug. 27, 1935. R. RIEBACK 2,012,693,

DOORLOCK Filed June 17, 1953 2 sheets-sheet 2 Patented Aug. 27, 1935 PATENT OFFICE DOORLOCK Rudolf Rieback, Berlin, Germany Application June 17, 1933, Serial No. 676,294 In Germany June 25, 1932 4 claims. (o1. vii- 14) This invention relates to a door lock with mu1- tiple bolting by means of transverse and ush bolts. In accordance with the present invention the main bolt is secured by means of two groups of Chubb-type tumblers, and a transverse bolt is connected, through a double lever mounted in a casing of the counter door leaf or of the door frame and a counter bolt located in engagement therewith, with an auxiliary bolt which can be fastened by means of tumblers and which in its turn acts on two vertically movable flush bolts.

Door locks equipped with swinging bolts in addition to the ordinary transverse bolts are known. However, the bar bolts are operated together with the locking bolt, so that on the locking of the lock bolt the bar bolts are also drawn back and consequently the lock is completely opened. Locks are also known that are locked by means of a transverse bolt secured by means of tumblers and are locked by means of keys havi ing several webs. In such locks, however, the tumblers of the main bolt do not work together with those of the transverse bolt through one web but each web engages only one bolt by means of tumblers.

The lock according to the invention is shown in the accompanying drawings.

Fig. 1 shows the lock in the open position, the lock cover being removed.

Fig. 2 shows the lock in the locked position.

Fig. 3 shows a section through the lock according to the line B-B of Fig. 1.

Fig. 4 shows the arrangement of the flush bolt at the side of the door.

Fig. 5 shows the engagement in the auxiliary bolt of the locking catch located on the transverse bolt.

Figs. 6-8 show the key, the forms of the key webs, and their positions.

The main bolt a is secured by means of the ordinary tumblers g, and also by means of two lateral tumblers h and a transverse bolt i. The transverse bolt i is secured by means of tumblers Ic, as shown in Fig. 2. When locking the lock, the tumblers Ic of the transverse bolt i must first be disengaged 'by means of the web d, and then the transverse bolt i, and, through it the lateral tumblers h must be simultaneously pressed up by means of the lug t of the key web d. Afterwards the tumblers g are disengaged by means of the vweb e and the main bolt a pressed forward during an auxiliary bolt c before it. When the auxiliary bolt c is pressed back the tumblers m, which are rotatably mounted on a bolt fixed in the casing of the lock, engage automatically behind a nose uof the auxiliary bolt c. `Simultaneously a locking catch l adjustably arranged on the transverse bolt i snaps into a notch which is-provided on the shaft of the auxiliary bolt c, as shown in Figs. 2 and 5. The auxiliary bolt c is provided on its lower edge with a rack which is in engagement with a toothed wheel q. The toothed wheel q is mounted on a common shaft with a toothed wheel r. The toothed wheel r engages racks of the flush bolts s, which are arranged on the inside of the door. Consequently, when the auxiliary bolt c is pressed back, the door is locked above and below by means of the bar bolts s. As long as the main bolt a is locked, it is not possible to move the counterbolt b or the auxiliary bolt c by moving the racks s.

However, when the lock is opened, the counter bolt b and the auxiliary bolt c are not taken along by the main bolt a as was the -case during the locking operation. Both remain in the locked position. As during locking, first the web d disengages the tumblers k and the transverse bolt i, and the lateral tumblers k are pressed up in order to press back by means of the web e the main bolt a, the ordinary tumblers g being disengaged. In order to press back the counter bolt b outof'the lock casing and to draw back the racks s, the tumblers k must be disengaged by means of the .web d and the transverse bolt i must .remain pressed up or be lifted out anew by means of the locking catch l. Afterwards the third web f disengages the tumblers m and the auxiliary bolt c is`pushed forward. The counter bolt b and the racks s are thus also pressed back.

The lock is thus locked by means of two webs but can be opened only by means of three Webs. In order to prevent the springing forward of the counter bolt b owing to vibration, it is held by a spring o. The locking catch l is pressed down by a spring p and by means of it the transverse bolti is also pressed down. The lateral tumblers h are not moved by the web e but by the lug t of the web d.

The advantages of the invention over safety locks of known kind are as follows:

The main bolt a is secured, not only by the ordinary tumblers g, but' also by both a transverse bolt i, which is likewise secured by means of tumblers 1c, and two lateral tumblers h, the locking notches of which correspond to the locking projection of the transverse bolt z' in such a manner that they must be disengaged simultaneously with the transverse bolt i by means of a special web d. A slight inaccuracy in the lug t on the web d prevents the locking of the main bolt a even when the tumblers lc are correctly disengaged. Ii' the lug -t is too high, the transverse bolt i cannot be ,liberated because the tumblers h. prematurely impede the transverse bolt i.` It the lug t is too low the tumbler h is not disengaged 5 on account of a premature impeding by the transverse bolt i. When the main bolt a is pushed Iorfward into the strike plate, a counter bolt b is pressed out of the strike plate into the lock casing, and when the counter bolt b is pressed forward into the lock casing the iiush bolt s arranged on the inside of the door is moved into the preliminary locking position by means of an auxiliary bolt c and a toothed-wheel transmission device so that the two leaves oi' the door are locked l5 in relation to each other by the two bolts a and b that engage over each other.

A violent pressing away of 'the leaf, the cutting out of the hat strip, or the pressing back of the bolt located in the i'lxed leaf at the front are,

zo therefore, impossible. Neither the counter bolt b nor the swing bolt s can be operated in 'any way as long as the main bolt a is locked. Only after the locking of the main bolt a can the counter ,bolt b and the bolt s be pressed back by the pre- 25 paratory locking oi an auxiliary bolt c after preliminary disengagement of the tumblers m'and locking catch b by means of a second and third web. The lock is consequently locked by means of two webs and the door is trebly bolted. 'I'he so lock is secured by means of ilve diierent kinds oi safety devices, and, indeed, by means of the or-4 dinary tumblers a and the tumblers h, by the transverse bolt i secured by tumblers, by the main bolt a, by the locking catch I and the tumblers m of the auxiliary bolt c. 5 According to the present invention two bolts of a door lock are so arranged that they move simultaneously in opposite directions when locking. During unlocking the movement in the op- 40 posite direction takes place step by step and by special movements of the key. One bolt is placed in the lock, the other in the casing. 'I'his reciprocal movement when locking is effected by any suitable means e. g. by a roller equipped with twonoses or by means of a double lever, as shown in the drawings, one arm of this lever being pushed by one end oi' one of the bolts, the other arm oi' the lever engaging the other bolt. The latter consistsof two parts, an ordinary bolt and an auxiliary bolt.

Furthermore, preferably a transverse bolt is provided which is pressed downward by means of a spring so that it blocks the two main bolts in both positions, locked and unlocked. In order to move (locking and`unlocking) the main bolts v it is necessary first to lift this transverse bolt.

Preferably two groups oi' tumblers vare provided for the main bolt which pushes the lever, the auxiliary part of the other main bolt being provided with another group of tumblers. The

transverse bolt has also a group oi tumblers.

One group of the tumblers of the main bolt which push the lever should be moved simultaneously with the transverse bolt.

'I'he key for the door-lock described must have three nested webs moimted around the same axis oi' rotation and each web connected with a special handle for moving it..

-Locking is accomplished by two movements-'oi' the key, and is controlled by two webs (each by one) and both in the same ordinary direction for locking. 4 Unlocking is done by three rotations o! the key, the nrst by a movement oi one web in the direction oi locking, the second and third by movements o! the second and third web in the opposite direction. I claim:

1. A. door lock comprising va lock case and a keeper, a main bolt with notches for the key, an 4 auxiliary bolt. a transverse bolt, .said three bolts being in the lock case. each of them secured by tumblers,- a lever in said keeper,- a counter bolt engaging one arm of said lever, the free arm. oi said lever in said keeper touching the main bolt 1( in the locked position, the free end of the counter bolt touching the end oi said auxiliary bolt which is directed towards the-keeper, a connection between the other end oi the auxiliary bolt and one end of the transverse bolt, a tooth on li the other end of the transverse bolt engaging the vend, o! the main bolt directed towards the interior of the lock case. y

2. A door lock comprising a lock case anda keeper, a main bolt with notches for the key, anat auxiliary bolt. a transverse bolt, said three'bolts being in the lock case. each'oi! them secured by tumblers, a lever in the keeper, a counter bolt engaging one arm of said lever, the free arm of said lever in said keeper touching the main bolt 25 in the locked position. th'e free end of the counter bolt touching the end of said auxiliary bolt which is directed towards the keeper, a connection between the other end of the auxiliary bolt and one l end of the transverse bolt corresponding to the '30 keeper bolt. a tooth on the other end of the transverse bolt engaging the end lor the main bolt directed towards the interior of the lock case, and asprin actuating the transverse bolt and pressing it to engagement with the main "35 bolt and the auxlliary'bolt. V

3. A door lock comprising a lock case and 'a keeper, a main bolt with notches for the key, an auxiliary bolt. a transverse bolt, said threev bolts l being in the lock case. a lever in said keeper, a '4b counter bolt engaging one arm o! said lever, the free arm of said lever in said keeper touchingv the main bolt in the locked position, the free end of the counter bolt touching the end of the aux` iliary bolt which is directed towards the-keeper, a 45 'tooth on the other end of the auxiliary bolt engaging a tooth on the end of the transverse bdt,

a tooth on the other end ot the transverse bolt engaging a tooth on the end of the main bolt 'g directed towards the interior o! the lock case, two 50 groups oi tumblers for the main bolt pushing laid i lever, one group of tumblers i'or the auxiliary bolt, and one groupoi tumblers for the transverse bolt. l

4'. A door lock comprising a lock case and M55 keeper. a main bolt with notches for the key, an auxiliary bolt. a transverse bolt, said three bolts being in the lock case, a lever in the keeper, a counter bolt 'engaging one armof said lever, the free arm oi' said lever in said keeper touching o the main bolt in the locked position, the Ires end ot the counter bolt touching the end ci' the auxiliary bolt which is directed towards the keeper, a toothK on the other end of the auxiliary bolt engaging a tooth on the end o! the transi verse bolt, a tooth on the other end of the transverse bolt engaging a tooth on the end of the main bolt directed towards the interior ci the lock case, two groups of tumblers forl the main bolt pushing the lever, one group ot laid '70 tumblers cooperating with the transverse boit, one group of tumblers for the auxiliary bolt, and one group of. tumblers for the transverse bolt.

' RUDOLF RIEBACK. 

